St Charles Weather Forecast

    • 55
    • 78

    Becoming Sunny

    • 61
    • 79

    Mostly Sunny

    • 61
    • 84

    Chance Thunderstorms

    • 57
    • 74

    Chance Rain Showers

    • 62
    • 77

    Rain Showers Likely

    • 53
    • 74

    Chance Rain Showers

Today 9 Sep Cuming

Partly sunny this Morning, then clearing. Highs in the upper 70s. North Winds 5 to 10 Mph.

Tonight 9 Sep Cuming

Mostly clear. Lows in the mid 50s. North Winds around 5 Mph in the Evening, becoming light and variable.

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  • Temperature Real-Time

St Charles Temperature Statistics

September Temperature

Fremont Municipal Airport (26.1 miles)

  • Lowest 7 September, 2026

    68.4 °F

  • Average September

    81.7 °F

  • Highest 2 September, 2026

    94.6 °F

Climate (2021–2026)

Fremont Municipal Airport (26.1 miles)

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  • Average Low 2021–2026

    42.5 °F

  • Average 2021–2026

    53.7 °F

  • Average High 2021–2026

    65 °F
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